The spirits of heroes who attempted, but failed, to unify China during the Three Kingdoms era are sealed within ancient jewels. These jewels have been scattered across Japan and possess the ability to unlock the full potential of their inheritors. However, these owners, referred to as Toushi, are driven by an insatiable hunger for combat. Hakufu Sonsaku is one such Toushi. Residing in the countryside, Hakufu’s urge to beat something to a pulp remains unfulfilled until her mother instructs her to move to Tokyo. There, she begins training with other Toushi and steps onto the path toward her destiny.